Hi Ice. I built a shelf above monitor at the same height as the reflective dots are on my cap(I use the TrackClip on cap). In fact what I did was to fix the TrackIR upside down on the underside of the shelf using small easy-to-bend frame-to-wall fixings...All you need is a pair of pliers to bend the brackets into the desired shape to house the TrackIR legs and a few screws to fix the brackets. It has the advantage of making the TrackIR unit rock solid and as the shelf is connect to the wall there are no vibrations from desk as you pound away with joystick and throttle as you desperately try to evade someone on your six
...Also by having the TrackIR underneath the shelf it frees up the top part completely. Just remembert to turn the TrackIR 180 degrees in the software setup or else you will have to sit upside down
You could also just experiment using the software and see what position gives you the best reception.
Another thing you could try is to reduce the head movement by way of the software that is required when you look up/down.
Either way it's worth spending some time/experimenting to find that "TrackIR sweet spot".